Liquid-dispensing pump.



R. MUELLER. LIQUID DISPENSING PUMP. APPLICATION rxmzn rm. 2a, 1912.

Patented Sep1.9,1913.

I nun'onrn MUELLER, or cmcneo, rumors.

LIQUID-DISPEN SING PUMP.

To all whom it may concern I "Be it known that I, RUDOLPH MUELLER,

' citizen ofthe United, States, residing at :Chicago, in the county of Cook and State lowing to be a full, clear, and exact descripject' to-provide a pump in which the pum tion of the'invention, such as will enable others skilled in the art to which it appertains to make and use the same. a

This invention-has for itsobject to provide a novel construction in a ump for disa charging predetermined quantities of liquids dilspensing syrupsatso a fountains and the li re.

j The invention consists in the features of and which is particularly-adapted for use in construction and combinations of parts hereinafter fully describedand claimed; v

In the accompanying drawings illustrating the invention Figure 1.is a central verticallongitudinal section of a dispensing pump constructed in accordance with my invention. Fig. *2- is a detail section of the same on the line 2-2 of Fig. 1--. Mysaid invention has for its primary obbarrel and delivery spout consists of a sing e integral casting whereby I am enabled to make the-same from a non-corrosive metal particularly adapted to contain syrups, etc.

and which is probfagainst' the acids or the like containedthereimthe metal best adaptedto the purpose being a block tin alloy.

; A further object of the, invention is to provide means whereby .the pump barrel audits-delivery spout are. conveniently suspended from the cover plate of the-recep' ,tacle containing the liquid to be dispensed.

- A,.still further object of the invention is to ii-which may' e a justed'to discharge at'eaeh providers pum' plunger which is reciprobarrel-is suspended and operation any desired volume of liquid from the, maximum capacity of the to,a fractionof t adjustingimeans are, operable from the ex 1 e. same,.and m which the terior'of the vessel.

A still further object of the invention is 1 to provide means for attaching the delivery a gamed the member in whichjthe pump p unger' is reciprocallv movable to the cover pl'ate by means which when normally disump' barrel Patented Sept. 9, 1913.

*5TATES PATENT OFFICE I posed relatively to each otherwill not expose to the eye of the purchaser any threads or other matter or devices detracting from the neat finished appearance of the'apparatus.

My said pump comprises the barrel A which is cylindrical and is provided inits upper edge with recesses B through which liquid flows by gravity into said barrel. Cast integral with said pump barrel and communieating with the latter adjacent the bottom thereof is the delivery spout C of tubular form, the latter having an angularly off-set portion D at its upperor deliveryend which projects outwardly beyond the,forward edge of the cover plate E of the'receptacle in which the pump barrel is suspended. An externally threaded collar F is secured to the delivery spout C adjacent the upper end thereof by placing the same in the mold and casting the spout therethrough thus rendering said collar F substantially integral with the said spout but enabling said collar to be composed of a harder corrosivemetal, such as brass, without, however, afi'owling any danger of contact of the liquids passing through the spout with the same. The said collar Fis provided with an'annular flange ing. through which the threaded portion of sald collars passes is firmly engaged. The

said flange G isprovided at one point with a notch or recess in which the lug J formed by'rn'aking twoincisions in the cover. plate atone side of the opening and bending down;

theinterposed metal is adapted to engage,

the said collar being thus firmly held againstrotation relatively to "the cover plate E'andj I 9 positioned laterally out of proper alinenieut with'the central opening in sard cover plate. E through which the pump plunger K thusv preventing the pump barrel from being passes. he latter carries the piston L at its lower end, which is cast integral with" said plunger K and both said parts being 7 composed of'the same metal as the pump barrel and deliverv'spout. v A rod M preferably square in cross-section is secured in the upper endof the plunger K by inserting one endof said rod in the mold and casting the metal of said plunger K around; the same, the upper end portion Of said rod M being turned off to render sameeylindrieal and externally threaded for purposes which will be hereinafter set forth The said rod'M passes through the square central opening in a cup member N which is provided between its ends with an annular flange 0 bearing against the lower face of said cover plate E and which is similarl provided with a notch or recess P in whic a lug Q, similar to the lug J en ages. .The said cup member is also and receives and engages the lower threaded end portion of a sleeve S which serves as a stop to limit the downward movement of said plunger K. Said sleeve S is shown disposed in the highest position intended, whereby the minimum stroke of plunger is attained. On the upper threaded end of the latter there-is mounted the-tubular member 'I. which is telescopically movable in 'the sleeve S and is open at its lower end, the upper end portiomthcreof being plugged or otherwise rendered, thick and having acentral threaded o ening adapted to engage the upper threade end',portion of said rod M. A helical compression spring U is disposed within the cup member N and said tube T and bears at its lower end upon thebottom of said cup member and-at its u "er end upon the plug or other enlargement of said tube T,'said spring serving to maintain the rod K and piston L normally at the upper limit of their movement. A knob W is mounted upon the threaded upper end portion of the rod M above said tube T and is adapted to be engaged by the hand of. the

operator in displacing said plunger K- for the purpose of delivering liquid from the tool therewith for rotating the same.

" By. casting the pump pump barrel A. v

The-vessel or receptacle in which the pump barrel A is suspended and which is closed by means of the cover plate E has been omitted from illustrationas being superfluous. It will-be understood, of. course, that the level of liquid in said receptacle must be main tained higher than the upper end ,ortion of the pump barrel in order that the Bitter may fill by gravity therewith after each operation of the plunger K.

The nuts H and R are referably of cylindrical form and provide with small recesses or openings X for engagement of a suitabIle n view of the fact that under normal conditions nothing but smooth surfaces are exposed to view it will be obvious that a high egree of finish and polish may be main-- tained on same to render them at alltimes clean and pleasing to the eye.

barrel and spout of a single piece of non-corrosive metal, such as block tin or a block tin alloy, suflicient strength is obtained to render it unnecessary to employ other metals in the construction of-{the device. It is well-known that brass andother similar metals are easily affected by the acids contained in syrups or the like,

- Y Y 1.. In a dispensing device,

internal y threaded mounted in said cover,

Lsaid extension member,

and that a chemical reaction takes place between said substances which frequently deleterio-usly affects the syrups and renders them unwholesome and this single casting const-itutes anessential feature of the invention.

I claim as my invention:

the combination with a receptacle cover, of a discharge pipe for liquid 'passin through said'cover, and having an angu arly isposed discharge nozzle rigid therewith, anannularly enlarged threaded vcollar on said pipe having an annular flange, a nut on said collar between which and said flange said coverv is engaged, a projection on said cover engaging in a recess 111 said flangeforreventmg relative rotation of said cover an said dlscharge pipe, a pump barrel integral with and communicating at its discharge endwith said pipe and supported upon said cover solely by the latter, a piston for said pump, a piston-rod for said piston passing through said cover-and reciprocably movable relatively to the latter, and a spring 'operatively engaged with-said piston rod for maintaining the same normally at the upperlimit of its movement. I

' 2. In a'syrup pump, a pump barrel, a discharge pipe and an angular discharge spout integral with each other, a collar between the ends of the discharge pipe having an an nular flange and exteriorly threaded above said flange, a receptacle cover. having I an opening to receive said collar, anut for said collar between which and said flange, said cover is enga'ged,.a piston rod reciprocably a piston thereon reciprocably movable in said pump barrel, and coacting mterengaging meansonsaid cover and said discharge pipe for positively maintaining said pump barrel axially alined with said piston.

'3. In a dispensing device, the combination with the cover of a receptacle for liquid to be dispensed, of a pump-barrel having a discharge pipe integral therewith and passing through said cover andrigidly secured thereto for supporting said pump-barrel thereon, apiston and piston rod for said pump bar.- rel, a cup member passing through an opening in said cover and-rigidly secured thereto, said cup member internally threaded, an externally threaded extension member for said cup member adjustable therein, said piston rod passing through said cup member and a knob on said piston rod having a tubular extension member,

a stop on said piston rod adapted to engage the lower end of said cup member forlimit ing its upward movement, and ahelicalcompression sprmg interposed between said knob and the bottom of said cup member for normally maintaining said piston rod at the upper limit of named extension member dlsposed in the its movement, said first path of said knob and constituting an adjustable stop for limiting the downward movement of said piston rod.

4. In a syrup pump, a ump barrel, a discharge pipe and an angu ar dischar e spout integral with each other, a collar etween the ends of the discharge pipe having an annular' flange and exteriorly threaded above said flange, a receptacle cover having an openin to receive said collar, a nut for said collar etween which and said flange, said cover is engaged, a piston rodreciprocably mounted in said cover, a piston thereon re-- ciprocably movable in said pump barrel, coacting interengaging means on said cover and said discharge pipe for positively maintaining said pump barrel axially alined with said piston, a screw-threaded cup member projecting through an opening in said cover 7 and provided with a flange, a nut onsaid threaded (portion between which and said flange sai cover is engaged,'coacting interengaging meanson said cover and said cup of said rod, an extension sleeve having threaded engagement with the interior 0 said cup member and adjustable therein and 1 constituting a stop adapted to be engaged by said knob to limit the downward movement of said piston rod, and a de ending sleeve on said'knob fitting telescopica ly in said extension sleeve. I

In testimony whereof I have signed my name in presence of two subscribing w1tnesses.

. a I RUDOLPH MUELLER. Witnesses M. W. BOYLE, S. HANSEN. 

